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Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6541633033

Certificate GIA 6541633033

Diamond specifications and retailer prices

From £1,230 GBP
As of November 6, 2026
Save £1,617 GBP (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,406 GBP at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6541633033. Listed at 20 retailers as of November 4, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6541633033
Dimensions6.77 × 6.74 × 4.24 mm
L/W Ratio1.00
Top View
6.77 mm6.74 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6541633033
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,022 GBP|Low: £1,230 GBP|High: £2,888 GBP|Avg: £1,842 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 5£1,230 GBP
Retailer 6£1,304 GBP
Retailer 7£1,363 GBP
Retailer 8£1,476 GBP
Retailer 3£1,759 GBP
Retailer 2£1,896 GBP
Retailer 1£2,022 GBP
Retailer 4£2,846 GBP

38 data points across 8 retailers

20 retailers£1,230 GBP to £2,846 GBP

A
Cheapest Retailer
-
£1,230 GBP
A
Retailer 2
-
£1,304 GBP
View
A
Retailer 3
-
£1,334 GBP
View
A
Retailer 4
-
£1,363 GBP
View
Final sale: no returns
Retailer 5
-
£1,476 GBP
View
Price last confirmed 29 days ago
Retailer 6
-
£1,476 GBP
View
Price last confirmed 50 days ago
Retailer 7
-
£1,476 GBP
View
Price last confirmed 29 days ago
B+
Retailer 8
-
£1,522 GBP
View
Retailer 9
-
£1,544 GBP
View
Price last confirmed 38 days ago
B+
Retailer 10
-
£1,649 GBP
View
B+
Retailer 11
-
£1,649 GBP
View
Retailer 12
-
£1,703 GBP
View
Price last confirmed 28 days ago
Retailer 13
-
£1,703 GBP
View
Price last confirmed 45 days ago
B+
Retailer 14
-
£1,709 GBP
View
B+
Retailer 15
-
£1,759 GBP
View
B+
Retailer 16
-
£1,896 GBP
View
B+
Retailer 17
-
£2,022 GBP
View
B
Retailer 18
-
£2,846 GBP
View
Retailer 19
-
£3,406 GBP
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
3cc92061-c7d1-4186-8fff-b7d8e6c2af42 · Sep 19
£3,406 GBP
$4,584 USD
View
Price last confirmed 47 days ago
19 more retailers have this diamond
Prices start from £1,230 GBPSave up to £1,617 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.20ct Round
£1,230 GBP